On January 24, 2018 SELLAS Life Sciences Group, Inc. (SELLAS; NASDAQ: SLS) reported that an abstract highlighting the detailed description of antigen-specific immune responses and correlation thereof with clinical effects over time has been accepted for oral presentation at the 2018 European Society for Blood and Marrow Transplantation (EBMT) 44th Annual Meeting taking place March 18-21 in Lisbon, Portugal (Press release, Sellas Life Sciences, JAN 24, 2018, View Source [SID1234523569]).
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"The abstract to be presented at the EBMT Conference highlights the depth of our clinical program exploring the potential of GPS as an innovative immunotherapeutic for multiple cancer types," said Angelos M. Stergiou, MD, ScD h.c., President and CEO of SELLAS. "There has been great interest in immuno-oncology approaches for the treatment of MM and GPS offers an exciting opportunity by directly immunizing the host against a key immune target in multiple myeloma, namely WT1, particularly in view of strong differentiating attributes of our hetereoclitic immunotherapeutic as well as the other indications we are carefully pursuing."
Multiple myeloma (MM) patients with high-risk cytogenetics at baseline who also remain positive for minimal residual disease post-frontline autologous stem cell transplantation continue to experience poor clinical outcomes, despite maintenance with immunomodulatory drugs, such as lenalidomide. This is a population segment that represents approximately 15-20% of first-line MM patients. In previous reports, such patients immunized with GPS in a Phase 2 study (n=18) experienced a median progression-free survival of 23.6 months and an 18 month overall survival of 88%.
The presentation at the EBMT Conference will entail detailed correlative analyses between clinical benefit, as reflected by the rate of achievement of complete response/very good partial response, per International Myeloma Working Group criteria, and antigen-specific immuno-responses of the complete dataset from this Phase 2 study.
Details for the presentation are as follows:
Title: Clinical Benefit after Galinpepimut-S (GPS), a WT1 Immunotherapeutic, Correlates With Antigen-Specific Immune Responses in High-Risk Multiple Myeloma: Complete Analysis of the Phase 2 GPS Maintenance Study.
Presenter: Guenther Koehne, MD, PhD, Miami Cancer Institute, Baptist Health South Florida
Session: Oral Session 4 – Multiple Myeloma; Room 5B
Abstract Number: A-947-0029-01047
Date/Time: March 19, 2018, 3:50 p.m WET/ 10:50 a.m. EST
Location: Centro de Congressos de Lisboa / Lisbon Congress Centre (LCC), Room 5B
The presentation will be made available on the Presentations section of Sellas’ website at www.sellaslifesciences.com/publications immediately following the presentation.
About galinpepimut-S (GPS)
GPS is a heteroclitic multivalent, multi-peptide cancer immunotherapeutic agent composed of four peptides, addressing over 20 epitopes, and derived from the WT1 protein, which has been ranked by the National Cancer Institute as a top priority among cancer antigens for immunotherapy. Importantly, because the WT1 antigen is over-expressed in many malignancies, and is not found in most normal tissues, GPS has the potential to be a broad immunotherapy, effective across a multitude of diverse cancer types and patient populations.